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No deep package C-states with disabled onboard NIC or attached eth cable

bather_swig
Level 7

‎02-24-2025 12:28 AM - edited ‎02-24-2025 12:39 AM

Hi all,

I have ROG STRIX B760-I GAMING WIFI and there are some issues with onboard NIC.

With all default BIOS settings and disabled onboard NIC, the system is stuck at C2-C3 package states. A power consumption (measured with a power meter at the wall) is 12-13W.

Enabling onboard NIC with NO ethernet cable attached, I see up to C10 package states and 4-5W of power consumption. Connecting an eth cable makes system again stuck at C2-C3 with 12-13W.

I observe this on both Windows Server 2025 and Fedora Server 41, so it is something about BIOS/board. Setting in BIOS all ASPM and C states to explicitly Enabled, doesn’t change the situation. Disabling ASPM makes power consumption even worse.

My setup is headless (no usb/hdmi attached) with only these components: Intel i9-13900K, G.Skill Ripjaws S5 5600MHz, WD SN700 4TB. Nothing else is attached or plugged in.

More than week ago I sent an email request to the support, they asked for more details, I provided them and no updates since then. I sent an another email on Friday, Feb 21 asking “are there any updates” and didn’t hear yet back.

I’m considering to return the board if posting here won’t help either as the board can’t meet my planned 24/7 usage . 😞

ROG STRIX B760-I GAMING WIFI
ROG STRIX B760-I GAMING WIFI
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2 REPLIES 2

Jiaszzz_ROG
Customer Service Agent

‎03-02-2025 08:34 AM

Hello @bather_swig 

Thank you for reaching out to us.
Based on your description, the currently installed operating systems, Windows Server 2025 and Fedora Server 41, differ from the officially supported operating systems listed on the ROG STRIX B760-I GAMING WIFI Tech Spec.

There may be differences in server-specific optimizations, power plan support, or driver compatibility. Have you tried cross-testing with Windows 10 or Windows 11 to verify the relevant power consumption behavior?

Thank you.

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bather_swig
Level 7
In response to Jiaszzz_ROG

‎03-03-2025 02:24 AM - edited ‎03-03-2025 02:25 AM

There may be differences in server-specific optimizations, power plan support, or driver compatibility. Have you tried cross-testing with Windows 10 or Windows 11 to verify the relevant power consumption behavior?

Sorry, you're saying something irrelevant, because as I wrote, both systems are able to achieve C10 package c-states when onboard NIC is enabled in BIOS but cable is unplugged. This means their power plans are configured properly and NIC drivers don't prevent entering low power and higher C-states. But when NIC is disabled in BIOS, it's no longer detected by systems, and both of them with the same power plan settings and drivers can't reach C10 and are stuck at C3. This only could be the case when the board or BIOS has a bug that prevents entering deeper C-states.

I also tested on Windows 11. The result is pretty much the same, so "supported systems" fail either. The board just eats up money because of sucking electricity for absolutely no reason. There are boards from rivals that do work well under the same conditions. After I emailed support for more than two weeks ago, support yet didn't answer with any solution. After pinging them with another email, they answered "no solution yet".

I returned the board, so I'm no longer interested in receiving answers. Failed board, failed support.

Thanks.

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